Exploring the Relationship Between Halide Substitution, Structural disorder, and Li+ Distribution in Lithium Argyrodites Li6-xAsS5-xBr1+x
Lithium argyrodite superionic conductors have recently gained significant attention as potential solid electrolytes for all-solid-state batteries because of their high ionic conductivity and ease of processing. Promising aspects of these materials are the ability to introduce different halide (Li6-xAsS5-xHal1+x, Hal = Cl and Br) into the crystal structure, which can greatly impact the lithium distribution over the wide range of accessible sites and the structural site disorder which both strongly influence the ionic conductivity. However, the relationship between halide substitution, structural site disorder, and lithium distribution is not fully understood. In this study, we investigate the Bromide substitution on lithium argyrodite Li6-xAsS5-xBr1+x and identified the solubility limit by changing the synthesis protocol. Here we plan neutron diffraction experiments on Br- substituted Li6-xAsS5-xBr1+x solid solutions, which will shed light on the Li-distribution and elucidate the structure-property relationships in this system.
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GAUTAM Ajay and SUARD Emmanuelle. (2023). Exploring the Relationship Between Halide Substitution, Structural disorder, and Li+ Distribution in Lithium Argyrodites Li6-xAsS5-xBr1+x. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.EASY-1182
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